METHOD OF COMMUNICATION BETWEEN AN AUTOMATIC BRANCH EXCHANGE AND A MESSAGING SYSTEM PROVIDING AT LEAST ONE VOICE SERVICE, AUTOMATIC BRANCH EXCHANGE AND MESSAGING SYSTEM IMPLEMENTING A METHOD OF THIS KIND

摘要

A method and apparatus for communication between an automatic branch exchange and a messaging system using a signaling channel. The signaling channel bearing at least some of the signaling exchanges between the automatic branch exchange and the messaging system. The automatic branch exchange and the messaging system are also interconnected by voice channels so as to implement voice services on the messaging system. The signaling channel is distinct from the voice channels.